import  {ref,onMounted,computed} from 'vue'

export default function(){
    //数据
    let sum = ref(0)
    let bigSum = computed(()=>{
        return sum.value * 10
    })
    //方法
    function add()
    {
        sum.value +=1
    }
    onMounted(()=>{
        add()
    })
    return {sum,add,bigSum}
}
    
    
    